MUSIC ICON DOLLY PARTON & POP SUPERSTAR KATY PERRY JOIN FORCES FOR A CAN’T-MISS PERFORMANCE AT THE 51ST ACADEMY OF COUNTRY MUSIC AWARDS®! ACADEMY TO HONOR DOLLY PARTON’S COAT OF MANY COLORS WITH THE TEX RITTER AWARD DURING THE TELECAST BROADCAST LIVE FROM THE MGM GRAND GARDEN ARENA